The main differences are that in a Closed System there are a limited number of nutrients, whereas in an Open System of growth there are an unlimited amount of nutrients. ... In contrast, in a Closed System Growth, dead cells remain in the same area where living cells are attempting to divide.
A possible cause was a meteorite hit the earth. it caused many organisms to become extinct because it blocked out the Sun so plants couldn't grow and herbivores couldn't eat the plants and carnivores couldn't eat herbivores.
State some of the land forms of the Morteratsch Glacier.
Answer: U-Shaped Valleys, Fjords, and Hanging Valleys
Glaciers carve a set of distinctive, steep-walled, flat-bottomed valleys. U-shaped valleys, fjords, and hanging valleys are examples of the kinds of valleys glaciers can erode.
Paragraph: It is just after the Pasterze Glacier and Gepatschferner, the third largest and by volume (1.2 km3) the most massive glacier in the eastern alps. The Morteratsch Glacier is a typical valley glacier with a pronounced ice front. The accumulation zone lies between the peaks of Piz Morteratsch, Piz Bernina, Crast' Agüzza, Piz Argient, Piz Zupò and Bellavista. From Piz Argient to the ice front in the Val Morteratsch, its horizontal extent is less than ~6 km (3.7 mi), with an altitude difference of up to 2,000 m (6,600 ft).[citation needed].
Together with the Pers Glacier, originating at Piz Palü, which joins the Morteratsch just below the rock formation Isla Persa ("Lost Isle"), as of 1973 it covered an area of about 16 km2 (6.2 sq mi). The volume of the ice is estimated to be about 1.2 km3.[citation needed] The Morteratsch Glacier drains into the Ova da Morteratsch, which eventually flows into the Inn and hence via the Danube into the Black Sea.[1]
In spring, depending on the snow conditions, a 10-km-long ski-run accessible to skilled skiers is marked on the glacier. It leads from the Diavolezza aerial tramway terminus to the Morteratsch inn and has an altitude difference of 1,100 m (3,600 ft). The Morteratsch railway station used to be situated directly at the ice front of the glacier. The ice front has receded over 2,800 m (9,200 ft) in the meantime (as of 2016), and can no longer be seen from the station.[1][2]
Yearly length change measurements have been recorded since 1878. For the period to 1998, the overall retreat was over 1.8 km (1.1 mi) with a mean annual retreat rate of approximately 17.2 m (56 ft) per year. This long-term average has markedly increased in recent years, receding 30 m (98 ft) per year from 1999–2005. Substantial retreat was ongoing through 2006 as well.[3] During the last ten years, it lost another 1 kilometre (0.62 mi).[4]
